Bad mouth

[roybo 2,873]

Undershot is when the teeth of the bottom come in front of the top. Like a bulldog.

Overshot is when the top protrude forwards so there a gap between the upper and lower ,goofy if you will.

 

 

[skycat 6,172]

It would be very unusual for a lurcher to be undershot: far more likely in terriers, and one of the main reasons undershot terriers lose teeth engaging their quarry. Slightly overshot in a lurcher isn't a problem, but if its more than a few millimetres it could affect the way they bite and by doubling up on the problem you could end up with the pups being much more overshot than the parents. Be interesting to see photos of both dog and bitch: their mouths, that is, in profile.

Note: sighthound and lurcher pups often appear very overshot as they are growing, because the top jaw grows more quickly than the bottom jaw. Once had a pup who was a clear centimetre overshot at 16 weeks old, but by the time she was adult she had a perfect bite. The same went for one of her aunts.

[Blackdog92 2,047]

On 14/02/2018 at 19:42, cantona said:

Has anyone bred from or no of a breeding from an undershot dog and can answer from experience please

My old boy once bred from a undershot sheepdog bitch, none of the pups inherited the fault. But also, only one of the pups was any good out the litter but I don’t believe that had anything to do with the bitch. 

These were sheepdogs though not running dogs so the need for a good mouth isn’t as vital as a running dog. 

[billhardy 2,341]

On 14 February 2018 at 20:21, baker boy said:

 

Ive bred from dog and bitch with perfect mouths and have them throw bad mouths, Ive also had a whole litter with good mouths out of an undershot bitch, lurchers tend to throw less bad mouths than terriers all my experience has been with terriers

Both carriers both must have been carriers of the defect genetically ,now this can be a hidden recessive gene ,breed from non phenotype defective studs  ,,it always shows itself generations on if breeding from this defect. The defect will be hidden for a generation then full nests of defective welps tight mouths overs. Unders crowded mouths none good for a animal  full stop.find a good quality animal .atb bunnys.